user
Find any two characters in the story who have the same behavior.

Input: Once upon a time there was a king who liked to listen to music. He had a loyal servant who was very good at playing the guitar. The king liked him very much.
One day the king decided to take a walk in the forest and take some of his servants along. One of them was the loyal servant who had been playing the guitar.

Output:
assistant
The king and the loyal servant both enjoy music and are loyal to each other. They both take walks in the forest and accompany each other.